eso endless Infinite archive
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ESO Infinite Archive Guide

Welcome to my Infinite Archive Guide for ESO! The Infinite Archive is a rogue-like Endless Dungeon in The Elder Scrolls Online, designed for Two Players, a Player and a Companion or Solo Players! The Archive pits players against waves of enemies with a simple goal in mind, to make it as far as possible! Inside the Infinite Archive you can fight various enemies and earn unique rewards, including a special Archive Currency and Class dedicated Sets!

Table of Contents

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What is the Infinite Archive in ESO

The Infinite Archive is a rogue-like Dungeon, designed as a Duo Arena that players can also complete alone or with the help of one of the many Companions in ESO! A never ending challenge that is getting harder and harder the more you play and advance. The goal of the Archive is to make it as far as possible and collect its various rewards, as well as its unique currency, Archival Fortune. There is only one level of difficulty in the Archive, unlike other group or solo content in ESO. Additionally you cannot save your progress and continue later or another day. You will have to complete your Infinite Archive run in one go or die trying!

Leaderboards are also available for the Archive for Duo and Solo players. Playing with a Companion will not register as a Solo run. The Archive is located on the North Eastern Part of the Apocrypha zone but is available with the base game! Non Necrom Chapter(required to access the Apocrypha zone) owners can enter the Archive by clicking on its icon on the map. Any good Solo Build can work well in the Archive but dedicated Infinite Archive Builds that combine strong Defense and offense will be the Best to use! Some of the Best Infinite Archive Builds you can use are:

infinite archive guide location
Infinite Archive Location

How the Infinite Archive Works in ESO

The Archive consists of Stages, Cycles and Arcs! Three(3) Stages make a Cycle and Five(5) Cycles make an Arc! Every new Arc you enter ramps up the difficulty of the gameplay. A stage consists of three(3) waves of enemies, with the final wave being slightly harder and having more enemies. All enemies in a wave share the same theme and can come from every corner or content of ESO. When you clear the first two stages you unlock the third, which is basically a Cycle Boss fight! Cycle Bosses can be any Boss from anywhere in Tamriel. You will encounter Delve, World, Public Dungeons, 4-man Dungeons and Trial Bosses at the end of every Cycle in the Archive! Each Boss has its own unique mechanics(with the hardest of them being toned down for the Archive) and some Bosses are harder than other!

molag kena boss inside the archive
Molag Kena as Cycle Boss

At the end of the Fifth Cycle, you will fight Tho’at Replicanum, the Archive’s main Boss that unlocks new Arcs! Tho’at also has unique mechanics that expand and evolve with every new Arc! You only have three(3) lives or Threads of Fate as they are called. When you lose all three your run is over! You can get extra Threads by collecting special Visions!

Tho’at Replicanum Boss Mechanics in ESO

During the first Arc fight Tho’at has the following main attacks:

  • Summons Crystal ground AOEs that deal significant damage over time while you stand inside them.
  • Summons a Greatsword and slices with it dealing moderate damage.
  • With the Greatsword performs a Heavy Attack that can one shot you unless you block it. Tho’at will teleport to you before the attack.
  • Throws the Greatsword and summons a huge eye that fires a beam at you. Easy to evade by moving around.
  • Summons a Mirror that shields her from attacks. If you attack her while shielded she reflects damage!
  • Summons Glass Shards that throws at you. If she throws all Shards at the same time can one shot you.
  • Summons more Shards that attack you independently. Kill them fast.
eso endless Infinite archive
Tho’at Replicanum

In the Second Arc Tho’at will use the same attacks as before but also add a few new moves:

  • Tho’at will expand the area and summon a Crystal Tentacle that attacks you.
  • At around 60% Health will summon a Crystal Atronach called Tho’at’s Shard that attacks you along with her.
  • The Crystal Atronach can teleport in the area, summon large and smaller Crystal Tentacles.

In the Third Arc Tho’at will use the same attacks as before but also add a few new moves:

  • When the Crystal Atronach drops to around 60% Health will further expand the area and summon a Crystal Manticora!
  • The Manticora does moderate damage when you are close but it has a deadly AOE attack! It summons shards of glass above you that slowly follow you before they descent, dealing massive damage and stunning you. Avoid this attack at all costs!
  • The Manticora can also spawn crystal walls on the ground, that are however easy to avoid.

Special Enemies in Infinite Archive ESO

During your run you will face a few types of special enemies in the Archive. These include:

  • Fabled Enemies
  • Marauders
  • Gw the Pilferer

Fabled enemies are named enemies that use special attacks during Stages. They are not that hard to defeat, they just use special abilities against you. Marauders on the other hand are powerful Boss-like Enemies that can appear from Arc 2 and beyond during Stages. Marauders have lots of HP and deadly moves that can kill you easily. Unlike other enemies during a Stage, a Marauder can drop loot. Gw the Pilferer finally, is a goblin that appears during Cycle Boss fights and also offers loot. Gw is not fighting back but you need to kill him fast before he escapes.

eso Infinite archive marauder appearing
Marauder Spawns

Portal to the Unknown in Infinite Archive ESO

Portal to the Unknown” have a chance to appear when you clear a stage! Typically you get two of those in every Arc. These portals take you to new areas where you have to complete a mini game or defeat a special enemy for extra rewards. The known Portal to the Unknown encounters so far are:

  • Destozuno’s Library
  • Echoing Den
  • Filer’s Wing
  • Haefal’s Butchery
  • Theater of War
  • Treacherous Crossing

In Destozuno’s Library help Destozuno by accepting a series of quests. The first quest will ask you to find Sheaves of Pages during your Archive runs. When you complete this Quest the next time you will meet Destozuno she will offer a new Quest, to gather Bookbinding Supplies! After you complete those two, Destozuno will offer a third repeatable quest where she asks you to find ten pages. In Echoing Den, bring back the soul fragments to the spirits in the area while in Filer’s Wing you will take the form of a Filer and with the use of special skills you should find and defeat Tomeshells.

Inside Haefal’s Butchery eat Sweet Rolls while in a goat form to regain your strength and defeat the Butcher with your Ultimate ability! In Theater of War defeat the Arcanist Aramril to proceed and in Treacherous Crossing use the switches to clear the path and get to the other side as fast as possible. Treacherous crossing is easier to complete with another player. Completing Portals to the Unknown offers extra rewards in the form of Muniment Chests and Verses!

eso Infinite archive portal to the unknown
Portal to the Unknown(right portal)

Verses and Visions in Infinite Archive ESO

In your effort to clear the Archive from the countless enemies inside you can rely on the help of Verses and Visions! These are special buffs that you earn at the end of Stages and Cycles and can help you become stronger. Verses are temporary buffs that you can take at the end of a Stage and last until the end of the next Stage! Usually you can only have one Verse active at any time but you can get a second when you clear a Portal to the Unknown encounter!

Verses

Visions are permanent buffs that you get when you defeat a Cycle Boss or Tho’at Replicanum at the end of an Arc. Visions will last until the rest of your archive run, can complement your Build and are more important because of this. You can stack Visions of the same type and become even stronger in a specific aspect of gameplay. It is possible to reroll Visions at the cost of Archival Fortunes. Both Verses and Visions are divided in Offensive, Defensive and Utility categories, offering unique buffs to your gameplay.

eso infinite archive
Visions

Infinite Archive Rewards in ESO

When you defeat a Cycle Boss or Tho’at Replicanum, you get a Muniment Chest! This Chest can drop various rewards including:

  • Archival Fortune, the archive’s new unique currency
  • Companion gear
  • Overland Sets Pieces
  • Furnishings
  • Leads for Antiquities
  • Hermaeus Mora Deck Fragments
  • Treasures
  • Class Sets Style Pages
  • Gold and more items

Chests you get when you defeat Tho’at will also drop pieces from Class dedicated Sets that you can only find in the Archive! Marauders and Gw the Pilferer are enemies that can also drop similar loot to Muniment Chests. Only Marauders can drop Class Sets pieces though. Finally Muniment Chests can also appear after clearing a “Portal to the Unknown” encounter.

Master Malkhest

Infinite Archive Daily Quests in ESO

There are two Daily Quests you can accept inside the Archive! One from Master Malkhest and one from Esalinwe. Inside the Archive’s “Lobby” area you can talk to Master Malkhest to receive “The Margins of Ire” Quest. You can complete the Quest by clearing the first Arc of the Archive. As a reward you will receive Archival Fortunes, Class Sets pieces and a Skill point. After that you can accept it again as a Daily Quest titled “Replication Elimination“.

Near Master Malkhest you can also find Esalinwe. A ghost that seeks revenge from the maligraphies that killed her inside the Archive. Esalinwe will offer you the Infinite Avenger: Fabled and Infinite Avenger: Marauder Daily Quests. Depending on the quest you receive, you will have to kill Fabled Enemies or Marauders during your Infinite Archive runs.

Merchants and Other Services in Infinite Archive ESO

In the same area with Master Malkhest and Esalinwe you can find three Merchants and a few services. Filer Tezurs, Filer Brax and Filer Ool are the Merchants of the Archive. You can only use Archival Fortune currency to buy items from them. Filer Tezurs offers:

  • Account Upgrades for the Archive
  • Furnishings
  • Class Sets Style Pages
  • Crafting Materials
  • Mystery Verses

From Filer Brax you can buy Curated and unidentified Class Sets items. While Filer Ool offers:

In this area you can also find the Runic Thread Weaver and the Reset Hourglass switches! Use the Runic Thread Weaver to end and register your run to the leadeboards. Use the Reset Hourglass to reset the instance and start again!